阅读说明：本技术 一种基于t’触发器的脉冲触发自锁按钮开关 (Pulse trigger self-locking button switch based on T' trigger ) 是由 李福生 张伟业 徐磊 于 2019-11-04 设计创作，主要内容包括：本发明公开了一种基于T’触发器的脉冲触发自锁按钮,属于电路式开关领域,短路金属片贴附在按钮底座的四角上且与电压输入Vin+端相连；短路金属环贴附在按钮底座上表面；按钮底座的下表面具有第一引脚、第二引脚、第三引脚和第四引脚,分别与内嵌式逻辑控制电路的电压输入Vin+端相连、电压输入GND端相连、电压输出Vout+端相连和电压输出GND端相连；接触金属镂空隆起按钮的四角紧贴在按钮底座上的四角短路金属片上；接触金属镂空隆起按钮与短路金属环之间形成脉冲触发开关S1。本发明采用T’触发器翻转原理控制MOS管关断来实现开关自锁和打开,省去使用微处理器控制,节省了整个系统的成本,使得接触按钮开关的应用场景更加广泛。(The invention discloses a pulse triggering self-locking button based on a T' trigger, belonging to the field of circuit switches.A short circuit metal sheet is attached to four corners of a button base and is connected with a voltage input Vin + end; the short circuit metal ring is attached to the upper surface of the button base; the lower surface of the button base is provided with a first pin, a second pin, a third pin and a fourth pin which are respectively connected with a voltage input Vin + end, a voltage input GND end, a voltage output Vout + end and a voltage output GND end of the embedded logic control circuit; the four corners of the contact metal hollowed-out bump button are tightly attached to the four-corner short circuit metal sheet on the button base; and a pulse trigger switch S1 is formed between the contact metal hollowed-out bump button and the short circuit metal ring. The invention adopts the T' trigger flip principle to control the turn-off of the MOS tube to realize the self-locking and the turn-on of the switch, saves the use of a microprocessor for control, saves the cost of the whole system and leads the application scene of the contact button switch to be wider.)

1. A pulse trigger self-locking button based on a T' trigger is characterized by comprising a contact metal hollowed-out bump button (1), a short circuit metal ring (3), a short circuit metal sheet (4), a button base (5) and an embedded logic control circuit (6); the short circuit metal sheets (4) are attached to four corners of the button base (5); the short circuit metal ring (3) is attached to the upper surface of the button base (5); the lower surface of the button base (5) is provided with a first pin (7), a second pin (8), a third pin (9) and a fourth pin (10); the four corners of the contact metal hollowed-out bump button (1) are tightly attached to the four-corner short circuit metal sheet (4) on the button base (5); a pulse trigger switch S1 is formed between the contact metal hollowed-out bump button (1) and the short circuit metal ring (3); the first pin (7) and the short circuit metal sheet (4) are connected with a voltage input Vin + end of the embedded logic control circuit (6); the second pin (8) is connected with a voltage input GND end of the embedded logic control circuit (6); the third pin (9) is connected with a voltage output Vout + end of the embedded logic control circuit (6); and the fourth pin (10) is connected with a voltage output GND end of the embedded logic control circuit (6).

2. The T 'trigger-based pulse-triggered self-locking button switch of claim 1, wherein the embedded logic control circuit (6) comprises a T' trigger, a level inverter, a power P-MOS transistor, a resistor R1 and a resistor R2, wherein the signal input end of the T 'trigger is connected to the short-circuit metal ring (3), the signal output end of the T' trigger is connected to the input end of the level inverter, the output end of the level inverter is connected to the gate of the power P-MOS transistor, the source of the power P-MOS transistor is electrically connected with the short-circuit metal sheet (4) to serve as a voltage input Vin + end, the drain of the power P-MOS transistor serves as a voltage output Vout + end, the short-circuit metal ring (3) is further connected with one end of the resistor R1, and the other end of the resistor R1 serves as a voltage input GND end; the drain electrode of the power P-MOS tube is also connected with one end of a resistor R2, and the other end of the resistor R2 is used as a voltage output GND end.

3. The T' trigger based pulse triggered latching push button switch according to claim 1, characterized in that the embedded logic control circuit (6) is embedded inside the push button base (5).

4. The T' trigger-based pulse-triggered self-locking button switch according to claim 1, further comprising an LED indicator light (2), wherein the LED indicator light (2) is attached to the upper surface of the button base (5); the LED indicator lamp (2) is positioned in the middle of the short circuit metal ring (3).

5. The T' trigger-based pulse triggered self-locking button switch according to claim 1, wherein the LED indicator light (2) has a positive terminal connected to the fourth pin (10) and a negative terminal connected to one end of a resistor, the other end of the resistor being grounded.

6. The T' trigger-based pulse triggering self-locking button switch is characterized in that when the switch is turned on, an LED indicator lamp (2) attached to the surface of the button base (5) is turned on, and when the switch is turned off, the LED indicator lamp (2) attached to the surface of the button base (5) is turned off.

7. The T 'trigger-based pulse triggering self-locking button switch is characterized in that the touch metal hollowed-out bump button (1) forms a short circuit between the short circuit metal ring (3) and the short circuit metal sheet (4) when contacting the short circuit metal ring (3) after being pressed, bent and deformed, so that the internal T' trigger level signal is triggered to overturn.

8. The T' trigger-based pulse-triggered self-locking button switch according to claim 1, wherein the metal-touch hollowed-out raised button (1) is hollowed out in the middle and around and raised in an arc shape, the periphery of the raised button is connected to a short-circuit metal sheet (4) of the button base (5), the hollowed-out part is used for passing light of an LED indicator lamp, and the raised part prevents the short-circuit metal ring (3) from being contacted without external force.

Technical Field

The invention relates to the technical field of digital circuits, in particular to a pulse-triggered self-locking button switch based on a T' trigger.

Background

The known self-locking switches are all mechanical self-locking, and the design has the following defects: occupation space is great, be unfavorable for high integration, mechanical contact is insensitive, the time mechanical part is damaged easily for a long time, and the shake process can appear at the application in conventional button switch, need artificially set up and remove tremble circuit or remove tremble procedure etc. and the button auto-lock circuit of current commonly used controls triode or MOS pipe through the treater and realizes the auto-lock of circuit, need add microprocessor in the circuit like this, so not only can occupy microprocessor's resource, and the cost of whole circuit and the complexity of circuit have been increased on some places that do not need microprocessor.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a pulse trigger self-locking button switch based on a T 'trigger, which realizes the on-off of a P-MOS tube by using the circuit self-locking and level overturning functions of the T' trigger so as to realize the self-locking on-off of the switch, so that the problems of large occupied space, difficulty in integration and the like of the circuit are overcome, and the application scene is wider.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a pulse trigger self-locking button based on a T' trigger comprises a contact metal hollowed-out raised button, a short circuit metal ring, a short circuit metal sheet, a button base and an embedded logic control circuit; the short circuit metal sheets are attached to four corners of the button base; the short circuit metal ring is attached to the upper surface of the button base; the lower surface of the button base is provided with a first pin, a second pin, a third pin and a fourth pin; the four corners of the contact metal hollowed-out bump button are tightly attached to the four-corner short circuit metal sheet on the button base; a pulse trigger switch S1 is formed between the contact metal hollowed-out bump button and the short circuit metal ring; the first pin and the short circuit metal sheet are both connected with a voltage input Vin + end of the embedded logic control circuit; the second pin is connected with a voltage input GND end of the embedded logic control circuit; the third pin is connected with a voltage output Vout + end of the embedded logic control circuit; the fourth pin is connected with a voltage output GND end of the embedded logic control circuit.

Furthermore, the embedded logic control circuit comprises a T ' trigger, a level inverter, a power P-MOS tube, a resistor R and a resistor R, wherein the signal input end of the T ' trigger is connected to a short-circuit metal ring, the signal output end of the T ' trigger is connected to the input end of the level inverter, the output end of the level inverter is connected to the grid electrode of the power P-MOS tube, the source electrode of the power P-MOS tube is electrically connected with a short-circuit metal sheet and then serves as a voltage input Vin + end, the drain electrode of the power P-MOS tube serves as a voltage output Vout + end, the short-circuit metal ring is also connected with one end of the resistor R, and the other end of the resistor R serves as a voltage input GND end; the drain electrode of the power P-MOS tube is also connected with one end of a resistor R, and the other end of the resistor R is used as a voltage output GND end.

Further, the embedded logic control circuit is embedded inside the button base.

Further, the LED lamp is attached to the upper surface of the button base; the LED indicator lamp is positioned in the middle of the short circuit metal ring.

Furthermore, the positive end of the LED indicator light is connected to the fourth pin, the negative end of the LED indicator light is connected to one end of a resistor, and the other end of the resistor is grounded.

Furthermore, when the switch is turned on, the LED indicator light attached to the surface of the button base is on, and when the switch is turned off, the LED indicator light attached to the surface of the button base is off.

Furthermore, the touch metal hollowed-out raised button forms a short circuit between the short circuit metal ring and the short circuit metal sheet when being pressed, bent and deformed and then being in contact with the short circuit metal ring, so that the level signal of the internal T' trigger is triggered to turn.

Further, touch metal fretwork uplift button by the middle part with fretwork all around and the middle part is the arc uplift, be connected to the short circuit sheet metal of button base all around on, fretwork part is used for the light through the LED pilot lamp, the uplift part prevents to have no exogenic action to contact the short circuit becket down.

The invention has the beneficial effects that: the button switch provided by the invention is miniaturized, the longitudinal and transverse spaces of the mechanical key self-locking switch are saved, the use space in a circuit board is reduced, and the high integration of the circuit is facilitated; expensive microprocessor components can be saved on a contact switch circuit needing self-locking, the cost of the whole circuit is reduced, and the resource space of the microprocessor in the circuit is saved; the switch has simple structure, the required integrated circuit has low cost and more choices are provided on a plurality of circuit boards which do not need expensive microprocessors but hope to use the contact self-locking switch; the appearance of the switch can further promote the lightness, miniaturization and ultra-thinness of electronic products, and software program processing of external jitter elimination circuits and jitter pulse elimination is not needed.

Drawings

The invention is further described with reference to the figures and examples of the specification.

FIG. 1 is a mechanical exploded view of key parts of a pulse-triggered self-locking button switch based on a T' trigger;

FIG. 2 is a mechanical diagram of a top contact dome of a pulse triggered latching pushbutton switch based on a T' trigger;

FIG. 3 is a top schematic view of a base portion of a pulse triggered latching push button switch based on a T' trigger;

FIG. 4 is a bottom schematic view of a base portion of a pulse triggered latching push button switch based on a T' trigger;

FIG. 5 is an overall mechanical design diagram of a pulse triggered latching push button switch based on a T' trigger;

FIG. 6 is a circuit diagram of the internal circuit of the pulse triggered latching button switch based on the T' trigger;

wherein: the touch metal hollow-out bump button comprises a touch metal hollow-out bump button 1, an LED indicator lamp 2, a short-circuit metal ring 3, a short-circuit metal sheet 4, a button base 5, an embedded logic control circuit 6, a first pin 7, a second pin 8, a third pin 9 and a fourth pin 10.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. In the following description and in the drawings, the same numbers in different drawings identify the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims. Various embodiments of the present description are described in an incremental manner.

It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions referred to as "first", "second", etc. in this application are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

As shown in fig. 1-6, the present embodiment provides a pulse-triggered self-locking button based on a T' trigger, which includes a contact metal hollowed-out bump button 1, a short-circuit metal ring 3, a short-circuit metal sheet 4, a button base 5, and an embedded logic control circuit 6;

the short circuit metal sheets 4 are attached to four corners of the button base 5;

the short circuit metal ring 3 is attached to the upper surface of the button base 5;

the lower surface of the button base 5 is provided with a first pin 7, a second pin 8, a third pin 9 and a fourth pin 10;

the four corners of the contact metal hollowed-out bump button 1 are tightly attached to the four-corner short circuit metal sheet 4 on the button base 5; a pulse trigger switch S1 is formed between the contact metal hollowed-out bump button 1 and the short circuit metal ring 3;

the first pin 7 and the short circuit metal sheet 4 are both connected with a voltage input Vin + end of the embedded logic control circuit 6;

the second pin 8 is connected with a voltage input GND end of the embedded logic control circuit 6;

the third pin 9 is connected with a voltage output Vout + end of the embedded logic control circuit 6;

the fourth pin 10 is connected to the voltage output GND of the embedded logic control circuit 6.

In this embodiment, the embedded logic control circuit 6 includes a T ' flip-flop, a level inverter, a power P-MOS transistor, a resistor R1, and a resistor R2, wherein a signal input terminal of the T ' flip-flop is connected to the short-circuit metal ring 3, a signal output terminal of the T ' flip-flop is connected to an input terminal of the level inverter, an output terminal of the level inverter is connected to a gate of the power P-MOS transistor, a source of the power P-MOS transistor is electrically connected to the short-circuit metal strip 4 and then serves as a voltage input Vin + terminal, a drain of the power P-MOS transistor serves as a voltage output Vout + terminal, the short-circuit metal ring 3 is further connected to one end of the resistor R1, and the other end of the resistor R1 serves as a; the drain electrode of the power P-MOS tube is also connected with one end of a resistor R2, and the other end of the resistor R2 is used as a voltage output GND end.

As shown in fig. 6, the T ' flip-flop is composed of 4 two-input nand gates and 2 three-input nand gates, and the inversion of the output level signal of the flip-flop is realized by using a state equation Q ═ Q ' (CP ×) and when the output signal of the T ' flip-flop is high level and is connected to the input end of the inverter, the output end of the level inverter outputs an opposite level signal to pull down the gate (G pole) of the P-MOS transistor to turn on the power P-MOS transistor to maintain the switch.

In the embodiment, in order to facilitate a user to distinguish the conduction state of the switch in the using process, the pulse triggering self-locking button based on the T' trigger further comprises an LED indicator lamp 2, and the LED indicator lamp 2 is attached to the upper surface of the button base 5; the LED indicator lamp 2 is positioned in the middle of the short-circuit metal ring 3. The specific electric connection is as follows: the positive end of the LED indicator lamp is connected to the fourth pin, the negative end of the LED indicator lamp is connected to one end of a 2K ohm resistor, and the other end of the resistor is grounded. When the switch is turned on, the LED indicator lamp 2 attached to the surface of the button base 5 is on, and when the switch is turned off, the LED indicator lamp 2 attached to the surface of the button base 5 is off.

In this embodiment, touch metal fretwork uplift button 1 by the middle part with fretwork all around and the middle part be the arc uplift, be connected to the short circuit sheetmetal 4 of button base 5 all around on, the fretwork part is used for the light through the LED pilot lamp, the uplift part prevents to have no exogenic action to contact short circuit becket 3 down.

When the touch metal hollowed-out bump button 1 is pressed, bent and deformed and then contacts with the short circuit metal ring 3, a short circuit between the short circuit metal ring 3 and the short circuit metal sheet 4 is formed, the T' trigger receives a signal rising edge transmitted by the button and then overturns and maintains an output end level signal of the trigger, the level inverter overturns and outputs the level signal of the output end of the trigger to the grid electrode of the power P-MOS transistor to control the on-off of the power P-MOS transistor, and when the grid electrode of the power P-MOS transistor receives that the output end of the level inverter is a low level, the power P-MOS transistor is conducted to maintain a circuit to be opened, so that the switching effect is realized.

The pulse trigger self-locking button based on the T' trigger provided by the embodiment can be used in an electronic circuit which saves cost, does not need to occupy microprocessor resources, wants to obtain circuit self-locking and simultaneously reduces the occupation of overlarge circuit space due to the application of a mechanical switch.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.